what methods did you use to get snow working? edp 1.8 does not have Silent Natit x86_64 v1.0.2, delete extra folder and reinstall edp1.8.pkg build again with option 4. if not you have something in s/l/e or an injector or modified kernel if you used another distro to install osx. this works strait vanilla.
you can literally make a hdd image from a real mac, install edp and build with your latitude model, install chameleon to it and boot osx.